Harness-frame-leveling mechanism



May 20, 1930. H. w. THATCHER 9,

HARNESS FRAME LEVELING MECHANISM Fired Oct. 7, 1929 Fig.1.-

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ll I lnJnTor. Hurry W.ThuTcheT' b mwwm Patented May 20, 1930 UNITED. TAT-Es memo-Few HARRY w. THA'rcHEnQor HornnALn, lvrassacnusnrrsnssrenon 'ro mmrnn con-- 1 nonun on, or HOPEDALE, MASSACHUSETTS, A conrona'rron for MAINE HARNESS-FRAME-LEVELING ivrnonainsivr Applicationfile'd October '7, I929. 'serial'No. 397,854;

This invention relates to a harness motion for looms of that type in which a plurality of-harness frames are connected to and operated by an osclllating 'cone. I

' The object of the inventionis to provide a-simple andefficient mechanism to enable the harnesses readily tobe leveled manually.

. These and other objects andfeatures "of I. the invention will [appear more fully from the accompanying description and drawings and will be particularly pointed out in the claims. v a

,As the cone type of mechanism for operating the harness frames of a loom is well known and familiar to those skilled in the art, and as the invention is co'ncernedonly with a means for enabling the manual leveling of the harness framesto beeffected, it is only necessary .here to illustrate and describe those portions of a loom'with which the'invention is directly ass0ciated,together with a simple and preferred mechanismembodying the invention.

- Inthe drawing:

1 Fig. l is a front elevationof a portion of the loom arch, a portion of a pair of harness frames, and a-cone mechanism foroperating the same.

Fig. 2 is a top plan view showing the operating connections for-the cone, together with a preferred forma -r the. invention embodied therein. v A

Fig. 3 is a front elevation of the construction shown in Fig. 2.- a

Fig. 4 is a detail in cross section taken on the line 44 of Fig. 2.

The loom arch 1 is shown assupporting 7 suitable idler rolls 2 over which flexible c011 nections 3 extend to a plurality or harness frames, the top bars a of which only are shown. The harness framesmay be operated from the bottom in opposition to the connections 3 in any suitable manner. The flexible connections 3 extend to and are connected to a cone 5 in the usual manner so that when the cone is oscillated on its axis, the harness frames will be raised-and lowered as required in the formation of the weave.

' The cone 5 issecured to a shaft 6 journalled in suitable bearings? on arms 8' extending upwardfrom the loom arch Thel'driving arm'9 is secured to the shaft 6 as byqthe set adjustably connected the upper end of a connecting rod 17 extending to suitable means, not shown, by which the arm 11 is rocked or oscillatedon its axis froma suitable movingpart of the loom. v a

A latch 18 is mounted on oneof thear ms A rocker and movable into and out of locking engage ment with the other arm. In the preferred construction this latch compri'ses a bifurcated hub 19 straddling'the free endof the driving arm 9 and pivotally secured thereto by means a of a pivot shaft 20 mounted .in the hub and held in place by a cotter pin 21and journalled in the driving arm 9. The bifurcated hub 19 is provided with laterally projecting ears 22adapted to embrace therocker arm 11, as clearly shown in Fig. 4, The latchalso comprises an upstanding handle 23 by means of" which the latch may be swung on its pivot into or out of locking engagement with the rocker arm 11. The hub of the latch is also provided with fiat surfaces 24 and 25 ex tendingat rightangles to each other and engageab-le With ayielding ;or springdetent 26 secured to the driving a'rm,9 and extending alongside thereof. Thisdetent therefore acts to hold the latchin eit-her its looking or un-' locking position. It willthus be seen that; when the latch is in lockingposition, as shown in the drawings, the rocker arm ll'is mounted for coaxial oscillation withthecone and when: the'lat ch is in unlocking position. the rocker arm may have a-co'axial oscillation with-re.-

oscillatory movement, and for that purpose.

a pair of stop lugs 27 are shown on Wings; 9 H c extending from the rocker arm 11 :and adaptedto engage with a stop lug 28'on'the driving arm 9. 1

A suitable handle 29 is mounted for oscil- 5 latory movement with the cone and for that purpose is shown-as secured to the shaft 6 bv the set screws 30'and projects'radiallv' from the shaft. l

a The operationiof the device will be appar- 10 mt. Normally the latch18 is in the position shown, that is, in looking engagement with the rocker arm and held in thatpos-ition by the yielding detent 26. The rocker arm 11,

driving arm 9, handle 29, coneishaft (Sand '15 cone 5 all then oscillate togetherrcoaxially under, the control of the; connection 1' 7, rais ing and lowering the harnesse's'jas'required.

eWhen the loom stops and it is desired to'level i the harnesses, all that it is necessaryto'do is 2otoswingthelatch;18iabout its pivot 20 to unI CkingpOsition, where it is thenheld by the detent -26 engaging the surface 24. r The operative may then grasp the handle 29 and oscillate the shaft 6 and the cone 5 tos'level the harnesses. The operation is readily per- U 1'.' A cone-actuated loom harness frame} 40' mechanism compris ng. a -''cone 'mountcd'for" axial 0sc1llat1on,- connect ons thGIGfIC'm'QtO theharness frames, a rocker arm mounted for coaxialoscillation with and'with respect to the cone, means connected to the rocker arm for oscillatingit, a driving arm mounted for coaxial oscillation with the cone, alatch pivotally mounted on one of said arms and mova ble into and out oflocking'engagement with the other arm whereby --when the latch is maybe leveled manually. I

,2. A, cone-actuated loom harness frame swung intounlocking position the harnesses for use in the manual operation of the cone in leveling the harnesses.

5. A cone-actuated loom harness framemechanism comprising a cone mounted for axial oscillation, connections therefrom to the harness frames, a rocker arm'mounted for coaxial oscillation with and with respect to the-cone, means connected: to the rocker arm for oscillating it,a driving, arm mounted V for coaxial oscillation with the cone, a handle mounted for coaxial oscillation with the cone,

a latch mounted'on one of said armsand movable into and out of lockingengagement with the otherv arm whereby when the latch so a may be leveled manually by operating the is moved to unlocking posit-ion the harnesses handle.

6. A cone-actuated loom harness frame 7 mechanism comprising the construction delined in claim fiftogether with a yielding detent' for holding the'latch in either locking or unlocking positions mechanism comprising the construction de-o fined in claim 5, together with interengaging stops on said arms, to limit their relative oscillatory movement.

'8. A cone-actuated, loom harness frame mechanism comprising a cone shaft mounted for axial oscillation, a cone secured to the shaft, connections from the cone to the harness frames, a rocker arm journalled on the shaft, means connected'to the rocker arm for oscillating it, a driving armtsecured to the shaft, and alatch pivotally mounted on onecone-actuated loom harness frame of said arms and movable into and out oflocking engagement with the other arm.

9; A cone-actuated loom harness frame mechanlsm comprising the construction defined in claim 8, togetherwith a handle secured to the shaft .to enable the harnesses to be leveled manually when the latch is'swung' to unlocking position. v Initestimony whereof, I have signed my name to this'specification."

HARRY WQTHA CHERQ 1 mechanism comprising the-construction deorunlocking position. 7 v 3. cone-actuated loom "harness frame fined in claim -1, together with a yielding detent for holding the latch in either locking mechanism comprising the 'constructionde stops on said arms to limitkth ir relative oscillatory movement, V r

I 4, A cone-actuated loom harness frame mechanism-comprising the construction'de v fined in claim 1, "together with a handle (35 mounted for coaxial oscillation with the cone 7 'fined in claim l,vtogetherwith'interengaging- 

